Tesla Improving Model S Electric Car, Working on Hands-Free Driving

Tesla Motors is updating its Model S electric car's software to help ease drivers' worries about running out of battery charge. The automaker also hinted in a presentation on Thursday that in the future drivers will be able to take their hands off the wheel altogether. Tesla's latest software update -- which will be beamed to owners automatically in about 10 days -- will map out the best route to a driver's destination, based on the location of charging stations, and will guide the car to available spots to charge. The Model S can travel up to 270 miles on a single battery charge, which is more than double the range of other electric cars on the market. Musk says owners generally find that's enough to get them where they need to go. But range remains a concern for many potential buyers.

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